package com.atguigu.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

@Service
public class PaymentService {

    /**
     * 正常访问肯定OK的
     *
     * @param id
     * @return
     */
    public String paymentinfo_Ok(Integer id) {

        return "线程池:" + Thread.currentThread().getName() + "paymentinfo_Ok" + id + "\t" + "O(∩_∩)O哈哈";
    }


    @HystrixCommand(fallbackMethod = "paymentinfo_TimeOutHander",commandProperties = {
        @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "5000")
    })
    public String paymentinfo_TimeOut(Integer id) {
        int time = 3;
        //10/0
        try {
            TimeUnit.SECONDS.sleep(time);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池:" + Thread.currentThread().getName()  + id + "\t" + "O(∩_∩)O哈哈 " + "耗时：" + time;
    }

    public String paymentinfo_TimeOutHander(Integer id){
        return  "线程池："+Thread.currentThread().getName()+"8001系统出错，请稍后再试paymentinfo_TimeOutHander"+"\t"+"o(╥﹏╥)o";
    }

//=====服务熔断
    /**
     * fallbackMethod                               服务降级方法
     * circuitBreaker.enabled                       是否开启断路器
     * circuitBreaker.requestVolumeThreshold        请求次数
     * circuitBreaker.sleepWindowInMilliseconds     时间窗口期
     * circuitBreaker.errorThresholdPercentage      失败率达到多少后跳闸
     * 以下配置意思是在10秒时间内请求10次，如果有6此是失败的，就触发熔断器
     * 注解@HystrixProperty中的属性在com.netflix.hystrix.HystrixCommandProperties类中查看
     * @param id
     * @return
     */
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),// 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"),// 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"),// 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if(id < 0)
        {
            throw new RuntimeException("******id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功，流水号: " + serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能负数，请稍后再试，/(ㄒoㄒ)/~~   id: " +id;
    }
}
